Proportioning feeding device.



H. A. ALLEN. PROPORTIO'NING FEEDING DEVICE.

APPLlCATI ON FILED JULY WI 1916.

Patented Apr. 17, 1917.

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H. A. A LLE N. PROPORTIDNING FEEDING DEVICE.

APPLICATION FILED JULY 10. I916. 1,223,021 Patented Apr. 17, 1917.

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Ira /6%)"! H. A. ALLEN. PROPORTIONINGFEEDING DEVICE.

APPLICATION HLEDJULY I0 [915.

UNITED STATES PATENT OFFICE.

HENRY A. ALLEN, OF CHICAGO, II IiINOIS.

PROPORTIONING FEEDING DEV ICE.

To all whom it may concern Be it known that I, HENRY A. ALLEN, a citizenof the United States, residing at Chicago, in the county of Cook andState of Illinois, have invented a new and useful Improvement inProportioning Feeding Devices, of which the following is aspecification.

My invention relates more particularly to mechanism for proportioningthe feed of a chemical either in liquid or gaseous form, to a fluid inflowing condition, as for example, in the case of water purification, as

i for municipal consumption, feed-water for boilers and Water formanufacturing and other purposes, which require chemical treat ment ofthe water, it being common practice in filtration plants to use acoagulant, such as sulfate of aluminum and sulfate of iron and lime, andfor purposes of sterilization,

- liquid chlorin or chlorin gas or other suitable chemical solution.

.tained substantially constant.

water, and thus effect uniform treatment of.

the water,

My primary object is to provide for such proportioning of the fluids,regardless of changes in the rate of flow of the fluid. into whc theother fluid is to be "introduced;

. an to provide for the varying of the proions of the fluids under thecontrol of a operator. v

Referring to the accompanying drawings, Figure 1 is a view, partlydiagrammatic, of an apgaratus involving my invention, this view s 'owinit in connection with a conduit through which water to be treated flows.Fig. 2 is an enlarged section taken at the line on Fig. 1 and viewed inthe direction of V the arrpw Fig. 3 is a view like Fig. 1, but

with certain, parts thereof omitted, illustrating another form in whichmy invention may be provided. Fig. 4 is an enlarged i section taken atthe line 4 on Fig. 3 and Specification of Letters Patent.

Patented Apr.17-,1917.

Application filed July 10, 1916. Serial No. 108,430.

viewed in the direction of the arrow. Fig. 5 is a section taken at theline 5 on Fig. 4 and viewed in the direction of the arrow; the two formsof the invention illustrated in these figures being adapted, moreparticularly, for regulating the feed of a chemical in solution ,rndFig. 6, a view similar to Fig. 1, showing a further modification of theinvention, in a form suitable for use Where the chemical to heintroducedinto water is in the form of gas.

Referring more particularly to Figs. 1'

and 2, a conr uit through which the water for treatment, fows, and whichmay be in the form of a pipe or a trough, is represented at 7, and, inthe particular arrangement illustrated, is designed to receive formixture with the water flowing therethrough, a chemical in :ertain'proportions which is containedfin the receptacle 8, which, bypreference, communicates through a pipe 9 with the interior of aconstant head-device 10 1 formed of the casing 11 into which the pipe 9opens and a float-valve 12 controlling com muuication between the pipe 9and the casing 11. A pipe 13 leads from the lower end of the casing 11into a valve-casing 14, the

outlet of vhich is represented at 15 and terminates insuch position thatthe solution discharged therethrough from the casing 11, as hereinafterdescribed, will become mixed with the water or other fluid flow.- ingthrough the conduit 7, this pipe 15 preferably extending intothe'conduit 7 through a wall thereof and centrally of thestream toeffect the most desired mixture.

According to my invention, the feeding of the chemical solution from thecasing 11 into the conduit. 7 is effected by valve mechanism controlledby a device operated by the force of the water or other fluid flowingthrough the conduit 7, and a pumping element actuated by theh'eadproduced by the solutiorin the' casin 11 and controlled by the sail.valve mec anism, the device which iszcperated by the flow of waterthrough th( .conduit 7 and controls the valve,

being preferably of 'such character that it will be accuratelyresponsive to changes in the rate of. flow of the water or other fluidflowing thr )ugh the pipe 7 According to the embodiment of the inventionillustrated in Figs. 1 and 2, the valve element. rel erred to comprisesa stem 16 carrying three heads 17, 18 and 19, which are reciprocablewith the rod 16 in a bore 20 in the "casing 14. The pipe 13 opensthrough a side of the casing .14 into a passage 21 adapted toalternately communicate at its ends in the movement of the said valve,with passages 22 and 23, opening into the opposite ends of cylinder 24in which the pumping element, in the form of a floating piston 25,

24 extending into one end of the cylinder 24 through astufling-box14*,with'its opposite end threaded, asre resented at 27, at which itengages a threa ed opening in a head 28 secured to the cylinder, theouter end of this rod being provided with a hand-wheel 29 whichcoiiperates with an arm 30 on the head 28, these parts being providedwith scales 31 and 32 afl'ording an arrangement like that ofa-micrometer for adjusting with great precision the extent of theprotrusion *of the rod 24 into the cylinder 24. i The valve in thecasing14, in the articular arrangement shown, is connected with a pitman-33terminating in an eccentric-strap 34 surrounding an eccentric 35 securedon a shaft 36 which extends into the conduit 7 and carries thefluid-driven-device herein- .before referred to, and which, in theconstruction illustratedfis of a common and well known form comprisingradial arms 37 secured to the shaft 36 and terminating in cups 38.

In the operation of the device the solution to be fed into the water asit passes through the conduit 7 is charged into the receptacle 7 8 fromwhich it flows into the casing 11,

wherein a constant head of the solution is maintained through the mediumof the valve-device 12, The flowing of the fluid through the: conduit 7operates the shaft 36, and, consequently, the valve-device in the casing14 to alternately open the supply-pipe 13-to the passages 22- and 23 andthe port 26 with these same passages.

', Assuming the apparatus tobe in the position illustrated in thedrawings, the rotation 5 of the power-device in the conduit 7, in thedirect-ion of the larr'owinFi 2, shifts the valve-device 16 to the leftiinsaid figure, causing the passage 21 to communicate with passage 22,and passage -23 to communicate witlnoutlet-passage' 26, in this positionof the valve the bee 18 extending between the passage 22 and jmg betweenthe passages. 21 and 23; In

. the s'aid'position of the valve the solution asses re" 21' and passage'22- into the left-hen 26Iand the head 17 extend-- downwardly throughthe pipe; 13

end of the cylinder 24 behind'the piston 25, forcing the latter to theright in Fig. 2 until it strikes the stop 24, the piston in thismovement forcing from the right-hand. end

.of the cylinder 24 and into and throu h the passage 21 but open to thepassage 26, and

thepassage 23 is open to the passage 21 but closed to the passage 26,whereupon the fluid entering the valve-casing 14 through the pipe 13passes through the passage 21, bore 20 and passage 23, into theright-hand end of the cylinder 24, driving the piston 25 to the left inthis figure and forcing into the pipe,15 for discharge into the conduit7, the

solution which previously was the motive power for driving the piston 25to the right in Fig. 2. It will thus be understood that the pressureexerted by the solution supplied through the pipe 13 must be 'suflicientto overcome the friction of the parts of the device and theback-pressure exerted on the pipe 15 by the fluid flowing throu h theconduit 7, and this may be provi ed for by placing the tank 11 at suchelevation as will produce this desired. head, or by effecting thisdifference ofpressure in any other suitable way. a

It will also be understood from the foregoing that the nnmber of strokesmade by the piston 25 for any given length of time is dependent'on thespeed at which the valve 1 6'is reciprocated, and that this is dependenton the speed at which the fluid-operateddevice connected therewithandlocated in the conduit 7, is driven, the speed of rota tion of thelatter being in turn dependent on the speed at which the fluid flowsthrough the conduit 7, and thus the device operates to automaticallyregulate-the flow of solution into the conduit 7 tomaintain theproportions constant, regardless of variations in the flow of the fluidinto which it'iis to be introduced, in the conduit 7.

- The mechanism may be set to deliver any desired proportionate .amountof chemical solution to the conduit 7, by adjusting'the ad'ustable.stop-device 24, inasmuch as by adJuSting this device the length of thestroke of the piston 25 may be accurately regulated, the length ofstroke determining the amount.

of solution discharged through the pipe 15 into the conduit 7 with eachmovement of the piston 25 lengthwise of the c linder 24,.

Referring to Figs. 3,4-and 5 o the drawi'ngs, wherein I have disclosed amodification of the;-yal e mechanism which may be employed, 'thevalve-casing 'intowhich the pe 13 opens and from which the pipe 15 thiscase is of the rotary type, the valve proper being shown at 40 and beingin the form of a disk rotatable in the valve-chamber 41 of the casing 39and connected with the shaft 36 of the fiuid-driven-device in theconduit 7. The pipe 13 opens into the valvechamber 41 through a port d2diametrically opposing a port which communicates with the pipe 15, thechamber -Ll1 containing oppositely-extending passages 44: and i5disposed preferably at 90 angles to the ports 42 and and opening intothe ends of a cylinder 46 containing floating-piston 4LT, like thepiston the cylinder 46 containing an adjustable stop-device 48corresponding with the stop-device of Fig; 2.

The principle and 'mode of operation of this valve mechanism 'ispractically the same as that disclosed in Figs. 1 and 2, the rotation ofthe valve 40 serving in one position to open one end of the cylinder M3to the inlet 13 through the passage 414 and opening the discharge-end ofthe cylinder to the pipe 15 through the passages 4:5 and 43, and'whenrotated to another position by the fluid-open ated-device in the conduit7, to reverse communication of the cylinder with the pipes 13 and 15 toeffect introduction of the solution into the opposite end of thecylinder. -W'ith this construction, as with the one previously.described, the amount of solution which is forced through the pipe 15 isdependent entirely on the speed at which the valve 40 is rotated and theadjustment of the stop-device +18, but with any adjustment of thestopdevice 48 the proportion of the solution, relative tothe fluid intowhich it is introduced, remains a constant.

It may here be stated that while both of the constructions justdescribed involve, as shown, the use of a constant head-device, this isnot indis ensableto the practising of my invention, t ough it tends tomore uniformity in'the treatment of the water in the conduit 7. If theconstant head-device is not used, the pipe 9 can be directly connectedwith the inlet ofgthe casing 14 or 39, as the case may be.

In Fig. 6 I have shown, by an arrangeunder pressure. A tank containingthe gas under pressure to be introduced into the water in the conduit 7,is represented at 49, and While this tank may be directly connected withthe pipe 13 opening into the inlet of the valve 14, it is preferred thatthe gas be supplied to the valve-device, which in the construction shownis the same as that shown in Figs, 1 and 2, under constant pressure.

To this end a second tank" 50 is'provided and interposed between thetanks 49 and 50 and span ed with a 'diaphrigm 56 in a chamber 57, v

which is in con'niiunication by a pipe 58,

with. the. tanl'r 5(, the arrangement bein-g such that the pressure inthe tank 50 exerted against the diaph 'agm controls the sup ply of gasto the t2 11k 50, which is thusmaintained under constant pressure andwhich flows through the pipe 13 into the casing l l for actuating thesliding piston 25 therein, as explained of the construction shown inFigs. 1 and 2, it being necessary that the pressure in the ta ak 50 besufficiently great to overcome the fiction of the parts of theconstruction and back-pressure exerted on the interior of pipe 15 by thefluid in the conduit 7. To th=.s end it is preferred that gages 59 and60 be provided in communication with the conduit 7 and. pipe 13,respectively, in order that the operator may at all times determinewhether or not the desired difference in pressures exists for the properoperation of the apparatus.

It will be notec from the foregoing that thQTIJOWBI for forcing theliquid or gas, as the case may be, into the conduit 7 to be mixed withthe fluid flowing thei'ethrough, is furnished by tle head or pressure ofthe solution or gas, at d that the fiuid-driven-device in the condui; 7operates merely to perform the relative .y light work ofshifting thevalve for controlling the flow of the liquid or gas intothepump-cylinder, as hereinbefore described- This is of great advantage,inasmuch as: it IS necessary, in order that the device operatesubstantially accucertain forms in which my invention may be,

provided, I do no; wish to be understood as intending to limit itthereto, as the same may be variously modified and altered, with outdeparting from the splrit of my invention.

WhatI claim a snow anddesire tosecure by Letters Patent 1s- 1. Inapparatus of the character set forth, the combination. of a conduit forfluid, a source of'fluid un ler pressure for introduction into the'fluidflowing, in said'conduit, a device driven by the fluid in said conduit,and means operated by the said fluid under pressure and controlled bysaid device, for effecting the intro luetion of said fluid underpressure into said conduit,

2. In apparatus of the character set forth, the combination Of\ aconduit for fluid, a

source of fluid under a constant pressure forintroduction into the fluidflowing in said conduit, a device driven by' the fluid in said conduit,and means operated by the said fluid under pressure and controlled bysaid device, for effecting the introduction of said fluid under pressureinto said conduit.

3. In apparatus of the character set forth, the combination of a conduitfor fluid, a source of fluid under pressure for introduction into thefluidflowing in said conduit, a

device driven by the fluid in said conduit, a a

pumping element actuated by the said fluid under pressure to discharge'intosaid conduit, valve mechanism controlling the introduction of saidfluid under pressure into said pumping element, and means actuated bysaid device for actuating said 'valve means.

4. In apparatus of the characterv set forth, the combination of aconduit for fluid, a

- source of fluid under pressure for introduction into the fluid flowingin said conduit, a device driven by the fluid in said conduit,

a reciprocable pumping element actuated in both directions by the saidfluid under 'pressure and discharging into said conduit, valve mechanismcontrolling the supply to the pumping'element and the discharge therefrom of the said fluid under pressure, and means actuated by said devicefor actuating said valve "mechanism.

5, In apparatus of the character set forth,

the combination of a conduit for fl'uid, a source of fluid underpressure for introduc= tion into the fluid flowing in said conduit, adevice driven by the fluid said conduit,

"a cylinder having an outlet passage, a piston reciprocable in saidcylinder, valve 'means for'controllingthe introduction into the'cylinderbehind the-piston and the dischargevtherefrom into said conduit, of thesaid fluidunder pressure for actuating said piston to produce saiddischarge, and means actuated by said device for actuating said valvemeans. f

.6. In apparatus of the character set forth,

the combination of aconduit for fluid, a] source of fluid under pressurefor introduc-' tionginto "the fluid flowing in' said conduit,

a device driven by the fluid in said conduit, a cylinder containinginlet and outlet passages, a piston reciprocable in said cylinder anddriven by the. introduction of the said fluid under pressure intotheends of the cylinder alternately, valve mechanism con-.

trolling the alternate communication of the .v I

ends of the cylinder with said fluid under pressure and with the outletof the cylinder,

and means actuated by said'device for actuating said valve mechanism.

7. In apparatus of the character set forth, the combination of a conduitfor fluid, a source of fluid under pressurefor introduction into thefluid flowing in said conduit,

adevice driven by the fluid in. said conduit,"

a reciprocable pumping element operated by tlfe said fluid underpressure to effect the discharge of the fluid into said conduit, anadjustable stop for limiting the movement of said pumping element tovary the amount of fluid discharged into said conduit with eachoperation of said pumping element, and means actuated by said device forcontrolling the operation'of said pumping element. 1

8. In apparatus of the character setforth,

the combination of a conduit'for fluid, a source of fluid under pressurefor introduction into the fluid flowing in said conduit, a

device driven by the fluid'in said conduit, :1

cylinder containing 'inlet and outlet pas,

sages, a floating piston in said cylinder, ad- I justablemeansfor'regulating the stroke of .said piston, valve means controllingthe introdu ction of the saidfluid under pressure into the opposite endsof said cylinder alternately and the discharge therefrom into said'conduit, and means actuated bysaid devicefor operating sald .valvemeans.

9. In apparatus of the character set forth, the combination of a conduitfor fluid, a

'source of fluid under pressure for introduction into-thefluid flowingin said conduit, a device driven bythe fluid in said conduit,

acylinder containing inlet and outlet passages, saidvinlet passagesbeing adapted to convey the said fluid under pressure into the ends ofsaid cylinder, a floating piston insaid cylinder, adjustable means forcontrolling the stroke of said piston, valve meansv operating, whenactuated, to alternately con nect the inlets at the ends of saidcylinder with said source of fluid under pressure and with the outletfrom said cylinder, said out let discharging into said'conduit, andmeans actuated by said device for actuating said valve mechanlsm.

HENRY ALLEN;

